public ManagerServiceImpl() {
   try {
     connection = DB.getConnection();
   } catch (DataBaseException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
   }
 }
  @Override
  public void UpdatePersonalInfo(UpdatePersonalInfoForm updatePersonalInfoForm)
      throws UpdateDataException, DataBaseException {
    Connection connection = DB.getConnection();
    String sql =
        "update DormManage set DMPhone=? where DMid=" + updatePersonalInfoForm.getOwnerId();
    //	System.out.println(sql);
    try {
      PreparedStatement pstmt = connection.prepareStatement(sql);
      pstmt.setString(1, updatePersonalInfoForm.getPhone());
      pstmt.execute();

    } catch (SQLException e) {
      e.printStackTrace();
      throw new UpdateDataException();
    }
  }